Wormhole Attack Mitigation in Manet: A Cluster Based Avoidance Technique
Subhashis Banerjee, Koushik Majumder · International journal of Computer Networks & Communications · 2014
A Mobile Ad-Hoc Network (MANET) is a self configuring, infrastructure less network of mobile devices connected by wireless links.Loopholes like wireless medium, lack of a fixed infrastructure, dynamic topology, rapid deployment practices, and the hostile environments in which they may be deployed, make MANET vulnerable to a wide range of security attacks and Wormhole attack is one of them.During this attack a malicious node captures packets from one location in the network, and tunnels them to another colluding malicious node at a distant point, which replays them locally.This paper presents a cluster based Wormhole attack avoidance technique.The concept of hierarchical clustering with a novel hierarchical 32bit node addressing scheme is used for avoiding the attacking path during the route discovery phase of the DSR protocol, which is considered as the under lying routing protocol.Pinpointing the location of the wormhole nodes in the case of exposed attack is also given by using this method.